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61214292 = 2234188933
BaseRepresentation
bin1110100110000…
…0111001010100
311021012000020000
43221200321110
5111132324132
610024011300
71342212216
oct351407124
9137160200
1061214292
1131610227
1218600b30
13c8b3899
1481b65b6
15559287c
hex3a60e54

61214292 has 30 divisors (see below), whose sum is σ = 160027098. Its totient is φ = 20404656.

The previous prime is 61214287. The next prime is 61214299. The reversal of 61214292 is 29241216.

61214292 is a `hidden beast` number, since 612 + 1 + 42 + 9 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60746436 + 467856 = 7794^2 + 684^2 .

It is a super-2 number, since 2×612142922 = 7494379090122528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61214299) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 94143 + ... + 94790.

Almost surely, 261214292 is an apocalyptic number.

It is an amenable number.

61214292 is an abundant number, since it is smaller than the sum of its proper divisors (98812806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61214292 is a wasteful number, since it uses less digits than its factorization.

61214292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188949 (or 188938 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 61214292 is about 7823.9562882215. The cubic root of 61214292 is about 394.1101412467.

The spelling of 61214292 in words is "sixty-one million, two hundred fourteen thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 188933 377866 566799 755732 1133598 1700397 2267196 3400794 5101191 6801588 10202382 15303573 20404764 30607146 61214292